Native App Needs to Be Installed: Saving LauncherFor saving & opening files using IA, saving-launcher app has to be installed (by running it). If you run the app, it will configure the system so that Mozilla apps are aware of it, and can communicate with it. You can use the steps described below to install Saving Launcher.

Save the following 2 files, e.g. from the following local links, to a folder on your system (they are already downloaded as part of the addon archive (which makes it possible to provide the local links), but a manual installation is currently required): saving_launcher.json saving-launcher.exe Go to the folder where these 2 files are, and run saving-launcher.exe. This can be done, for instance, in 1 of the following 3 ways: Using a file manager (e.g., by double-clicking on the file); Or opening the file without leaving the Firefox app from Downloads user interface; Or using a command prompt (e.g., by typing its name and pressing the Enter key (Linux users might want to prefer this approach)). Re-start the Firefox app (FYI: Saving Launcher should start working even without re-starting on 2nd attempt after installing it).

As an alternative, instead of saving 2 files as indicated above in step 1., you can locate the archive file containing saving-launcher under your Mozilla profile; e.g., under a path like the following: %USERPROFILE%\AppData\Roaming\Mozilla\Firefox\Profiles\<some-profile/>\extensions\{16f796dd-a279-4548-9b3a-393d1eef31df}.xpi. If you unzip that file, you can run it as well. It will be under an OS-specific folder; e.g., for Windows 7 (32-bit) it will be under platform\Windows\x86-32 folder.Extra Info

WebExtensions standards do not allow extensions to interact with the file system directly: this is only possible via (WebExtensions) Native Messaging (API), and requires that a native application be installed by the user (currently the standards don't provide any way of automatically installing such an app). Saving Launcher is a native app (developed by the author of Image Assistant) that uses the standard Native Messaging API (for WebExtensions). If you'd like to learn more on this topic or if you'd like to configure Native Messaging for Image Assistant without using Saving Launcher's installation facility, you can read more about Native Messaging on the following pages: wiki.mozilla.org, developer.mozilla.org; developer.chrome.com, docs.microsoft.com.

You can also runsaving-launcher.exe -?from command line to see how to install it system-wide, uninstall it, or uninstall it system-wide.Image Assistant: ConfigurationNative Messaging with Saving Launcher: Firefox says the native app hasn't been installed (please read above for instructions)Paths for Images:Primary Secondary Reflect on UI: Image Viewer:Windows 10+: generic: Linux